Space Engineers is a sandbox game about engineering, construction, exploration and survival in space and on planets. Players build space ships, space stations, planetary outposts of various sizes and uses (civil and military), pilot ships and travel through space to explore planets and gather resources to survive. Featuring both creative and survival modes, there is no limit to what can be built, utilized and explored. Space Engineers features a realistic, volumetric-based physics engine: everything in the game can be assembled, disassembled, damaged and destroyed. The game can be played either in single or multiplayer modes.

pikacc says

Early access review which may contain spoilers

10/10 - Agree (24) Disagree

Space Engineers is game in Alpha state, but offers more hours of entertainment than many released games.

It's space sandbox where you can build, fly and crash ships. Building is very intuitive and feature various blocks, including reactors, cockpits, gyro, thrusts, turrets, armors, interiors and many other blocks. In latest update motor block has been added which allows many new designs.

Flying performance depends on design, especially reactor, thrusts and gyro placement. Crashes looks awesome, when you hit another ship you can expect realistic results. Metal parts are deformed, many sharp pieces are in visible.

The development team is community friendly, they fix bugs very quickly, listen to community and release usually weekly updates. Each update contain lots of new features!

Now there's 64-bit version, which allows you to build huge structures, limited only by your computer`s RAM.

Multiplayer and survival is planned for future, the developer is releasing first survival updates now. And this all for 15 bucks?
10 out of 10!